Driveline; Fueling Safety Checklist; Fuel Return; Fuel Fill Deck Plate - Back Cove Yachts Back Cove 30 Owner's Manual

accumulation of excess water. This water may be
drawn off through a valve on the bottom of the filter.
The fuel/water separator also contains a filtering
element which removes dirt and other contaminants
from the fuel. This filter should be checked daily and
changed annually.
A secondary fuel filter is fitted on the engine between
the fuel and injector pumps. This unit contains a finer
mesh filter which must also be replaced at least once
each season. Specific information regarding the
replacement of this filter can be found in the engine
owner's manual.
D. Fuel Fill Deck Plate
The fuel fill deck plate is located on the port side
deck, just forward of the cockpit. (see Fig_6.5-1) Use
the spanner wrench supplied to open it. It is
extremely important to tighten the cover well to
assure a watertight seal to keep rain and deck water
from entering the system. A heavy grade marine fuel
hose runs from the fuel fill deck plate to the top of the
tank. The fuel fill deck plate is grounded to the main
bonding system.
E. Fueling Safety Checklist
•
Close all openings into the hull and deck
(ports, hatch, and door).
•
NO smoking or operation of exposed flame
appliances.
•
Check fuel level to estimate how much is
needed.
•
Turn OFF all electrical equipment and main
battery switches.
•
Anyone not involved in fueling must leave the
area.
•
Remove the fuel fill deck plate and position
the fuel nozzle in the opening before
activating the fuel dock pump. Allow the
nozzle to remain in contact with the fuel fill
deck plate to avoid sparks from flow-induced
static charge. Avoid inducing an excessive
port list.
•
Have fire extinguisher handy.
•
Slowly fill to no more than 95% of the
capacity of the tank to allow for thermal
expansion during operation.
•
Do not allow fuel to flow through the vent
fitting on the outside of the hull.
•
Securely replace the fuel fill deck plate to
keep water out.
•
Wipe-up any fuel spills and discard any oily
rags.
•
Operate engine room blower for at least four
(4) minutes
•
Check below decks and in the bilge for fumes
and fuel prior to restarting engine.
F. Fuel Return
A diesel fuel pump delivers more fuel that is actually
required by an engine. The fuel not burned cools the
injectors by circulating near the tips, keeping these
very precise and expensive units from overheating
while exposed to the heat of combustion. This
excess, heated fuel is returned to the tanks where it
mixes with the cooler fuel and is again delivered to
the fuel pump.
Note:
If boat is equipped with the optional Cummins
QSD 350, there is no fuel return to the tank. The
fuel is circulated back thru the engine.
Care must be taken that there are no air pockets
in the fuel system, if air pocket occurs, that air
pocket will continue to circulate thru the engine
preventing the engine to continue running.
In the event this occurs, there is a pressure relief
valve on the engine that will need to be used to
remove the air pocket.
As no gauge is fully accurate, care is required to
allow adequate fuel for the distance to be
traveled. Knowing
consumption at various RPM's and the hours of
operation since fueling will be a better judge of
fuel available than the gauge. Exercise extreme
caution to avoid running out of fuel.

7.7 Driveline

The engine is attached to a marine transmission
which provides the forward-neutral-reverse shifting
functions and reduces the output speed of the engine
for more efficient propeller operation. A coupling on
the transmission attaches to a coupling on the
forward end of the propeller shaft. The propeller shaft
exits the hull through a shaft seal and shaft thru hull
(see Fig_6.6-1). The aft end of the propeller shaft is
supported by a rubber cutlass bearing installed in a
bronze strut (see Fig_6.6-2).
the approximate fuel